Abstract: The present invention provides a polypropylene resin composition including a polypropylene resin having a melt flow rate of 4-18 g/10 minutes, a flame retardant additive having a low melting point, an antimony oxide, a UV stabilizer, a silane coupling agent, and titanium dioxide as a light-blocking agent. The resin composition of the invention produces products exhibiting excellent flame retarding properties, stability against weather, and maintainability of physical/mechanical properties as shown by maintaining the original flame retarding properties after long periods of outdoor exposure and hydrothermal dipping treatments.

Abstract: The present invention relates to a flame-retardant polypropylene resin composition comprising (A) polypropylene resin 20-60% by weight, (B) polyphenylene ether-based resin 1-50% by weight, (C) hydrogenated block copolymer of a vinylaromatic compound and conjugated diene, which mainly is based on vinylaromatic compound, 0.1-15% by weight, (D) aromatic phosphoric ester in phenol strucure 1-20% by weight, (E) polyammonium phosphate 1-20% by weight, and (F) pentaerythritol-based flame retardant auxiliary agent 0.1-13% by weight. The weight ratio of the aromatic phosphoric ester in phenol structure to the polyammonium phosphate is preferably 0.2-5.0. The composition has advanced flame-retardant and heat-resistant property, and processing property.

Abstract: The present invention provides a polypropylene resin composition including a polypropylene resin having a melt flow rate of 4-18 g/10 minutes, a flame retardant additive having a low melting point, an antimony oxide, a UV stabilizer, a silane coupling agent, and titanium dioxide as a light-blocking agent. The resin composition of the invention produces products exhibiting excellent flame retarding properties, stability against weather, and maintainability of physical/mechanical properties as shown by maintaining the original flame retarding properties after long periods of outdoor exposure and hydrothermal dipping treatments.

Abstract: The present invention provides a flame retardant resin composition, or more particularly, a flame retardant polypropylene resin composition which comprises polypropylene having improved flow melt characteristics, flame retardants, a flame retardant aid, and a tetrafluoroethylene polymer. The composition of the present invention has high melt tension, without deterioration of the mechanical properties of flame retardant polypropylene, and drastically enhanced characteristics of shape maintenance and a flaming drip during burning.

Abstract: The present invention relates to a flame-retardant polypropylene resin composition comprising (A) polypropylene resin 20-60% by weight, (B) polyphenylene ether-based resin 1-50% by weight, (C) hydrogenated block copolymer of a vinylaromatic compound and conjugated diene, which mainly is based on vinylaromatic compound, 0.1-15% by weight, (D) aromatic phosphoric ester in phenol strucure 1-20% by weight, (E) polyammonium phosphate 1-20% by weight, and (F) pentaerythritol-based flame retardant auxiliary agent 0.1-13% by weight. The weight ratio of the aromatic phosphoric ester in phenol structure to the polyammonium phosphate is preferably 0.2-5.0. The composition has advanced flame-retardant and heat-resistant property, and processing property.

Abstract: The present invention provides a flame retardant resin composition, or more particularly, a flame retardant polypropylene resin composition which comprises polypropylene having improved flow melt characteristics, flame retardants, a flame retardant aid, and a tetrafluoroethylene polymer. The composition of the present invention has high melt tension, without deterioration of the mechanical properties of flame retardant polypropylene, and drastically enhanced characteristics of shape maintenance and a flaming drip during burning.